I'm making a custom Latex class which I am basing on the article class. When compiling a document I get ! LaTeX Error: No \title given., even though I use \title in the document.
How can I solve this problem?
[Tex/LaTex] Article class complaining about missing \title
documentclass-writingtitles
Related Solutions
You can create your own title page using the titlepage environment (as shown by the linked page you posted). One important thing to note is that it replaces the \maketitle command, i.e. it has to be placed after the \begin{document} not before. I think this is your problem.
Also for articles you would need to disable the page break at the end of the titlepage environment (See also Preventing page break after title page).
Here some working example:
\documentclass[12pt,a4paper]{article}
\usepackage{setspace}
\usepackage[textwidth=16cm,textheight=24cm]{geometry}
\begin{document}
\begin{titlepage}
\begin{center}
\vspace*{5cm}%
{\huge The Title}\\[1cm]
{\Large The SubTitle}\\[1cm]
%...
\end{center}
\let\newpage\relax% Avoid following page break
\end{titlepage}
\end{document}
Similar to this question, you can use etoolbox's \patchcmd to modify the \maketitle command:
\documentclass{Test}
\title{A great article}
\begin{document}
\maketitle
\end{document}
Test.cls
\ProvidesClass{Test}
\LoadClass{article}
\RequirePackage{etoolbox}
\patchcmd{\@maketitle}{\@title}{\@title{}, isn't it?}{}{}
\endinput
In general, you can use \show\somecommand to see what the definition of \somecommand is, and then find the part you want to patch.
Best Answer
The error means
\@titlehadn't been defined by the time\maketitleis used.So either you haven't used
\titleor used it in a local group, or redefined it not to define\@title.